| Application of Grey System Theory to tree growth prediction |
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| 作者姓名： | 王晶 侯月松 李伟林 成文惠 |
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| 作者单位： | Wang Jing; (Forestry Survey and Design Institute of Heilongjiang Province，Harbin 150080，P R.Chiha) Hou Yuesong;Li Weilin (Shuangyashan Forestry Bureau of Heilongjiang Province，Shuangyashan 155100，P R. China) Cheng Wenhui (Power University of Heilon |
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| 摘 要： | IntroductionDahurian larch plantations were planted affer the1950's in Heilongjiang Province. Some of them areless than 40 years old. There lack permanent plots oflong-term. Sometimes, statistical models for predicting tree growth are not always desirable. The GreySystem is a new branch of mathematics founded byProf. Deng Julong in 1982 (Deng 1985). In contrast tostatistic models, which need a lot of measured data,the Grey System only need a f6w data for setting upmodels. In recent years…
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| 收稿时间： | 8 September 1999 |
Application of Grey System Theory to tree growth prediction |
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| Wang Jing,Hou Yuesong,Li Weilin,Cheng Wenhui.Application of Grey System Theory to tree growth prediction[J].Journal of Forestry Research,2000,11(1):34-36. |
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| Authors: | Wang Jing Hou Yuesong Li Weilin Cheng Wenhui |
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| Institution: | (1) Forestry Survey and Design Institute of Heilongjiang Province, 150080 Harbin, P. R. China;(2) Shuangyashan Forestry Bureau of Heilongjiang Province, 155100 Shuangyashan, P. R. China;(3) Power University of Heilongjiang Province, 150030 Harbin, P. R. China |
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| Abstract: | Based on Grey System theory, tree growth prediction models are developed by using 202 temporary plots and 206 stem analysis trees of Dahurian larch (Larix gemlinii Rupr) in 10 forestry bureaus of Yakeshi Forestry Administrative Bureau in Daxing'an Mountains of the Inner Mongolia Autonomous Region. By residual and posterior tests, their precisions are qualified. With several data, tree growth can be predicted using Grey System models. For DBH and volume, the fitting results of Grey System models are better than that of statistical models. |
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| Keywords: | The Grey System Tree growth prediction Dahurian larch Plantations |
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